Characteristic research of pellet injection system in KSTAR
| Autor: | H. Y. Lee, Yeong-Kook Oh, KunSu Lee, Yong Chu, Hirofumi Yonekawa, SooHwan Park, Hong-Tack Kim, Young-ok Kim, JaeIn Song, Kwang-Pyo Kim, I.S. Woo |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Propellant
Materials science Liquid helium Mechanical Engineering Nuclear engineering digestive oral and skin physiology Nozzle Plastics extrusion Transfer line Plasma 01 natural sciences 010305 fluids & plasmas law.invention Nuclear Energy and Engineering law KSTAR 0103 physical sciences Pellet General Materials Science 010306 general physics Civil and Structural Engineering |
| Zdroj: | Fusion Engineering and Design. 136:1094-1099 |
| ISSN: | 0920-3796 |
| Popis: | 20 Hz pellet injection system was installed for improving a fueling system of KSTAR (Korea Superconducting Tokamak Advanced Research) in 2016. Several things of hardware such as a liquid helium transfer line, an extruder nozzle and an extension part of pellet guide tube are changed for 2017 campaign. For plasma experiments, the pellet injection system uses the smallest pellet (1.5 mm of length, 2 mm of diameter). The pellet velocity can be variable from 150 m/s to over 200 m/s by controlling of propellant gas pressure. The clear increase of plasma density observed during KSTAR experiments is also presented in this paper. |
| Databáze: | OpenAIRE |
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